How I’m Training My Digital Twin

2025-12-11

1,000 meters below sea level, there’s an entire world that’s never been explored.

There’s so much going on in our ocean’s — species we haven’t discovered, behavior we’ve never seen. That’s why I’m so passionate about ocean research, and why I decided to build @OceanX .

I’m so excited that our team at gets to play a part in bringing it to all of you. And I hope some of you find it as thrilling as I do. #oceanexploration #oceanx

2025-12-10

I’ve been using AI to help my decision-making for over 30 years. It’s a big part of what made Bridgewater successful.

I found that if I wrote down my criteria for making decisions and put them into algorithms, the computer could process far more information far more quickly than I could on my own. Alongside my logic and inspiration, it was a great partnership.

I started doing this in my investment decision-making, but soon incorporated it into my broader decision-making, as well. (By the way, that investment decision-making is what made Bridgewater so successful.) LLMs have made this process even more seamless and useful.

If you’re interested in trying out my beta AI tool, you can find it at the link below.

2025-11-29

Trying to figure out your holiday gift giving this year? I have a great suggestion for you.

There are organizations like @TisBestCards and @donorschooseorg that will give a donation to your recipient’s favorite charity, on your behalf.

I think gifts like these are more in keeping with what the holiday season is really about, so I wanted to pass it along. #redefinegifting

2025-11-06

History shows us that having too much debt during an economic downturn leads to a classic, self-reinforcing cycle where:

1) The empire can no longer borrow the money to repay its debts
2) It prints a lot of new money, which devalues the currency and raises inflation
3) Living standards decline, leading to the rise of political extremism
4) Turbulent economic conditions undermine productivity and there is conflict about how to divide the shrinking resources
5) Populist leaders emerge pledging to take control and bring about order

2025-11-03

My first real job was caddying, and it changed my life.

It was the 1960s, and the people I was caddying for were always talking about the stock market.

So, I took my caddying money and bought Northeast Airlines because it was the only company I had heard of that was selling for less than $5 a share.

Little did I know, but the stock was so cheap because they were about to go broke. But I got lucky and they got acquired, so I tripled my money.

And just like that, I was hooked.

2025-09-17

The increasing political polarization we’re seeing today isn’t anything new. It’s similar to what we saw in the 1930s, and it’s even something Plato wrote about a couple thousand years ago.

In democracies, people vote for their interests. And since people generally want more, politicians want to give it to them — and are willing to go into debt to make that happen.

Ultimately, things reach a breaking point where discipline is needed. People want somebody to get control of the government and make it work well.

But there are two versions as to who that somebody is.

In the 1930s, this led to the rise of fascism (for people who wanted a strong leader to lead a command economy) and communism (for people who wanted to redistribute opportunities).

Inevitably, these two clashing visions

2025-08-18

If you’re not generous with others and others aren’t generous with you, you won’t have a quality relationship.

2025-08-01

My principles around investment risk are the same during periods of turbulence (like we’re seeing now with tariffs) and periods of calm.

The most important thing is to pick the size of your exposure. For me, it all comes back to finding 15 good, uncorrelated return streams.

#principles